<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div>
        <input type="text" class="aa" autofocus value="123" />
        <input type="text" class="bb" value="abc" />
        <button id="submit">注入</button>
    </div>
    <script src="./popup.js"></script>
</body>
</html>